the M3M sight came in today. so far it looks very good for the $$ with free co-witness mount.

i mounted it up and bore-sighted it to 25M.

won't know till i have fired a couple rounds but it does seem very well made compared to other budget type optics. nice solid adjustment clicks. sturdy aluminum construction.
no pot metal so far. optics are very clear.to my scar and cataract prone eyes the sight seems a little fuzzy but every body else says it is as clear as a bell-- and other red-dot type sights seem a bit fuzzy as well to me.

it makes that ACOG knock off that i got from sprotsmans guide look like utter garbage which it was!

if it holds zero and the sight don't blink out or do some other weird stuff it is probably better than the other ACOG style optics like the barska and the bushnell trophy. and this is a bit less expensive than either of those.

not better than a real ACOG though but that would be too much to expect for the price.

if it holds up it is looking to be the top budget type red-dot sight for co-witness.